[php] Wordpress plugin install: Could not create directory

CentOS7 or Ubuntu 16


1.

WordPress uses ftp to install themes and plugins.
So the ftpd should have been configured to create-directory

vim /etc/pure-ftpd.confg

and if it is no then should be yes

# Are anonymous users allowed to create new directories?
AnonymousCanCreateDirs       yes

lastly

sudo systemctl restart pure-ftpd

2.

Maybe there is an ownership issue with the parent directories. Find the Web Server user name and group name if it is Apache Web Server

apachectl -S

it will print

...
...
User: name="apache" id=997
Group: name="apache" id=1000

on Ubuntu it is

User: name="www-data" id=33 not_used
Group: name="www-data" id=33 not_used

then

sudo chown -R apache:apache directory-name

3.

Sometimes it is because of directories permissions. So try

sudo chmod -R 755 directory-name

in some cases 755 does not work. (It should & I do not no why) so try

sudo chmod -R 777 directory-name

4.

Maybe it is because of php safe mode. So turn it off in the root of your domain

vim php.ini

then add

safe_mode = Off

NOTE:
For not entering FTP username and password each time installing a theme we can configure WordPress to use it directly by adding

define('FS_METHOD','direct');

to the wp-config.php file.

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